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int DecompressDailyFile(char *src,char *dest)
    {
     HANDLE hFileIn,hFileOut;
    // int i,j,k;
     int result=0;
     unsigned char *buf,*tmpbuf;
     int srclen,destlen;
     DWORD nNumberOfBytesRead,nNumberOfBytesWritten;
     //open src file
     hFileIn=CreateFile(src,GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
     if(hFileIn==INVALID_HANDLE_VALUE)
     {
      printf("open src file %s error\n",src);
      goto allexit;
     }
     //try to open dest file
     hFileOut=CreateFile(dest,GENERIC_READ | GENERIC_WRITE,FILE_SHARE_READ,NULL,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
     if(hFileOut==INVALID_HANDLE_VALUE)
     {//create file error
      printf("create dest file %s error\n",dest);
      goto closesrc;
     }
 
     srclen=GetFileSize(hFileIn,0)-4;//file size - head size=data size
     //read head
     ReadFile(hFileIn,&destlen,4,&nNumberOfBytesRead,NULL);
    //printf("\n\nzlz%s %s %d\n\n",src,dest,destlen);
     if(destlen==0)//file size is 0,then return
     {
      result++;
      goto closedest;
     }
     //alloc mem to hold data
     buf=(unsigned char*)HeapAlloc(hHeap,HEAP_NO_SERIALIZE,srclen);
     if(buf==NULL)
     {
      printf("alloc memory error\n");
      goto closedest;
     }
     //alloc mem to hold decompressed data
     tmpbuf=(unsigned char*)HeapAlloc(hHeap,HEAP_NO_SERIALIZE,destlen);
     if(tmpbuf==NULL)
     {
      printf("alloc memory error\n");
      goto freebuf;
     }
     //read data to buf
     ReadFile(hFileIn,buf,srclen,&nNumberOfBytesRead,NULL);
     //decompress
     if((pDecompressDaily)(buf,srclen,tmpbuf,&destlen))
     {//decompress ok,then write to file
      WriteFile(hFileOut,tmpbuf,destlen,&nNumberOfBytesWritten,0);
      result++;//set result
     }
     else
     {// decompress error
      printf("decompress %s error\n",src);
     }
     //free tmpbuf
     HeapFree(hHeap,HEAP_NO_SERIALIZE,tmpbuf);
 
    freebuf:
     HeapFree(hHeap,HEAP_NO_SERIALIZE,buf);
    closedest:
     CloseHandle(hFileOut);
    closesrc:
     CloseHandle(hFileIn);
    allexit:
     return result;
    }
    int DecompressMinuteFile(char *src,char *dest)
    {
     HANDLE hFileIn,hFileOut;
     int i;
     int result=0;
     unsigned char *buf,*tmpbuf;
     int srclen,destlen;
     SHORT head[31*2];
     DWORD nNumberOfBytesRead,nNumberOfBytesWritten;
 
     //open src file
     hFileIn=CreateFile(src,GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
     if(hFileIn==INVALID_HANDLE_VALUE)
     {
      printf("open src file %s error\n",src);
      goto allexit;
     }
     //try to open dest file
     hFileOut=CreateFile(dest,GENERIC_READ | GENERIC_WRITE,FILE_SHARE_READ,NULL,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
     if(hFileOut==INVALID_HANDLE_VALUE)
     {//if dest does not exist,create a new one
      printf("create dest file %s error\n",dest);
      goto closesrc;
     }
     //read head
     ReadFile(hFileIn,head,31*4,&nNumberOfBytesRead,NULL);
     for(i=0;i<31;i++)
     {
      if(head[i*2]!=0)
      {
       destlen=head[i*2];
       srclen=head[i*2+1];
       buf=(unsigned char*)HeapAlloc(hHeap,0,srclen);
       if(buf==NULL)
       {
        goto closedest;
       }
       tmpbuf=(unsigned char*)HeapAlloc(hHeap,0,destlen);
       if(tmpbuf==NULL)
       {
        goto freebuf;
       }
       ReadFile(hFileIn,buf,srclen,&nNumberOfBytesRead,NULL);
       if((pDecompressMinute)(buf,srclen,tmpbuf,&destlen))
       {
        WriteFile(hFileOut,tmpbuf,destlen,&nNumberOfBytesWritten,0);
       }
       else
       {
        printf("decompress %s error\n",src);
        goto freebuf1;
       }
       HeapFree(hHeap,0,tmpbuf);
       HeapFree(hHeap,0,buf);
      }
     }
     result++;
     goto closedest;
    freebuf1:
     HeapFree(hHeap,0,tmpbuf);
    freebuf:
     HeapFree(hHeap,0,buf);
    closedest:
     CloseHandle(hFileOut);
    closesrc:
     CloseHandle(hFileIn);
    allexit:
     return result;
    }